In a second embodiment of the invention and depending on the use and required characteristics of the molded article, the polymer matrix is selected from one of a thermoplastic resin; a thermoplastic elastomer, a thermosetting resin, and a vulcanized rubber. [0039] Examples of thermoplastic resin include polyethylene, polypropylene, ethylene ??-olefin copolymer such as ethylene-propylene copolymer,